Eraser holder



July 16, 1929. A. G. STEVENSON- 1,721,059

ERASER HOLDER Filed Feb. 25, 1927 INVENTOYIR /uis ATTORNEYS "Patented July 16, 1929.

ARTHUR G. STEVENSON, OF ROCHESTER, NEW YORK.

ERASER HOLDER.

Application filed February 25, 1927.

The present invention relates to eraser holders and is designed more particularly for attaching erasers to typewriting inachinesand the like, having for one object to afford a practical and etficient holder for the user.

A further object of the invention is to provide an lmproved holder for erasers embodying novel forms of construction affording economy in manufacture, increased length of service convenience in operation and quick application to the machines with which it is intended for use.

To these and other ends the invention resides in certain improvements and-combination of parts, all as will be hereinafter more fully described the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a front elevation illustrative of one embodiment of the invention and showin the same applied to a portion of a typewriter Figure 2 is a rear elevation;

Figure 3 is a view showing the eraser partially withdrawn from the casing;

Figure at is a side elevation illustrating the manner of applying the casing to a portion of a typewriting machine;

Figure 5 is a central section through the eraser and a stirrup or strap for supporting the same;

Figure 6 is a sectional elevation drawn to an enlarged scale, take-n centrally through the casing and the drum therein for retracting the eraser when released by the user;

Figure 7 is a view in elevation looking from the left of Figure 6 with the rear cover plate removed; and

Figure 8 is a sectional view taken on line 8 8" of FigureG.

Similar reference numerals throughout the several views indicate the same parts.

Referring to the drawings, 10 represents a portion of the. frame of a typewriter to which is attached a casing 11 by means of a suitable support 12 preferably in the form of a spring clip attached as shown in Figure 4. An eraser 12 of a well known type has connected thereto a flexible strap or stirrup Serial No. 170,987.

13 attached to the outer end of a cord 14 or an equivalent flexible member connected with areel 15 located within the casing, being journaled upon a suitable stud or spindle 16 projecting therein and preferably supported entirely by a plate 17 forming a closure for one end of the casing. The reel, which is preferably in the form of a drum is actuated to return the eraser to the normal position shown in Figure 1 by a spring 18 which is preferably mounted within the drum having its inner end bent to form a hook-shaped portion 19 which can be readily hooked over or detached from one of a plurality of upstanding lugs 20 struck inwardly from the cover plate 17 as shown in Figures 6 to 8 inclusive. The outer end of the spring is suitably secured to the drum preferably by inserting it behind an inwardly struck portion 21 of the inner drum section 22 and bending it over the same as indicated at 23 in Figures 7 and 8. Thus, one end of the spring is rigidly fixed to the casing which in turn is fixed to the typewriting machine, while the other end is fixed to the drum. Movement of the eraser by the person operating the machine to make the desired erasures from time to time will exert a pull on the cord 14 which is wound upon the drum in an opposite direction from the spring, thus causing the drum to revolve upon the spindle 16 to tension or wind up the spring so that upon releaseof the eraser the same will be quickly and automatically returned to the normal position shown in Figure 1. The winding of the spring by the pull exerted on the cord causes it to contract so that, when the cord has'been withdrawn to substantially the full extent, the innermost coil of the spring will be prevented from contacting with'the hub 24 of the drum by the upstanding lugs 20 provided forthis purpose. When the eraser is withdrawn substantially the full amount the lugs in advance of the one to which the spring is attached serve also to limit the bending action of the spring adjacent the hooked portion 19, thus avoiding the danger of break ing the spring at this point by relieving it of the strains which would otherwise be produced by excessive bending of the same in the absence of any restraining means. The inwardly struck portion 21 of the drum section 22 with which the outer end 23 of the spring is connected may be formed in any de-' sired manner but is preferably in the form of a loop, both ends of which are integrally con nected with the inner section 22 of the drum. The outer section 25 ot' the drum is sleeved upon the inner section and has a flange 26 opposite the outwardly extending flange 27 ot' the inner section, the cord being wound upon the drum between said flanges as shown in Figure 6. The inner end of the cord is preferably secured to the drum by extending it through a small opening in the outer section and knotting it as shown at 28. The cord is passed through an eyelet 2! secured upon the casing as shown in Figure 7, the inner surlace of the eyelet being rounded as indicated to avoid cutting of the cord.

The cover plate 17 is provided with a series of peripheral notches 30 adapted to receive tongues ill on the body of the casing which are bent down. into engagement with the cover plate shown at 31 in Figure 2 whereby said plate is clamped in the desired position upon the body. The drum, the spring and the cord constitute a com plete unit which may be attached to the cover plate as such before the latter is applied to the casing as described above. After inserting the spindle 16 within the hub 24: of the drum, the inner end of the spring is hooked over one of the lugs 20 as shown in liigure 7, the outer end of the spring having been previously secured to the drum as described above. The cord which extends through the eyelet 29 is attached to the strap 13 preferably by extending it through the central portion thereof and tying a knot at its end. The strap is made of soft or pliable material, such solit leather to prevent cutting of the cord.

The manner of attaching the spring 12 to the cover plate 17 is best shown in Figure 2. The .lixed end 32-3 oi. the spring is clamped upon the cover plate by a series of tongues or lugs struck outwardly from the latter,

.0116 of which is indicated at which is bent down into engagement with the extreme end of the fixed portion 33, while the'centrally disposed tongues 35 are bent down into engagement with the sides of said spring portion, all as shown in Figure 2.

The fixed end 33 of the spring serves to cover the openings 36 in the cover plate made by striking inwardly the lugs 20 whereby dirt is prevented from entering the casing through said openings.

The stirrup or strap 13 is constructed as best shown in Figure 5, having a snap fastener oi? a well known type in which the stud portion 37 on one end of the strap projects tlnxnigh the eyelet 38 ot the eraser into the socket 1nember39 on the opposite end of the strap, the eyelet serving to clamp the metal discs 40 upon the eraser in the usual manner.

\Vl'iile the holder is designed primarily for erasers it is not intended to limit its use to this particular article as it is readily adaptable tor holding other articles as well.

I claim as my invention:

1. An eraser holder for attachment to typewriting machines comprising, a cord and a stirrup connected with the outer end of the cord comprising a flexible strip of material having a socket member on one end and a stud on the other end adapted for insertion through an opening in an eraser into the socket member to form a support for the GI'HHGI',

2. An eraser holder comprising a strap constructed of soft material having a snap fastener with the stud portion thereof on one end of the strap and a socket portion on the other, the stud portion being arranged for insertion through an eraser into saidsocket portion and a cord having one end connected with the strap.

3. In a typewriter attachn'ient including a casing and a spring reel therein, the combination of an eraser having an opening therethrough, a strap of soft material having a snap fastener, the socket portion of which is secured to one end thereof and the stud to the opposite end, the stud being pro-- jected thru the opening of the eraser into the socket portion, and a .cord extending through a portion of the strap and secured thereto, the opposite end of the cord being connected to said spring reel.

ARTHUR G. STEVENSON. 

